Defined Benefit Retirement Plans (Tables)

3 Months Ended

Jul. 31, 2013

Defined Benefit Retirement Plans [Abstract]

Components of net pension expense for the defined benefit plans

The components of net pension expense for the defined benefit plans were as follows (in thousands):

	For the Three Months Ended July 31,
	2013	2012
Service Cost	$1,958	$4,566
Interest Cost	7,338	6,867
Expected Return on Plan Assets	(8,911)	(7,714)
Net Amortization of Prior Service Cost	30	245
Recognized Net Actuarial Loss	3,457	2,327
Net Pension Expense	$3,872	$6,291